Silo-door.



A. W. WOODWARD.

SILO DOOR.

APPLICATION man JAN. 15.1916.

LQLMQW Patented Apr. 10, 1917.

m: NURRIS PETERS punmnrum. wAswn wl u. c. s

ALVA W. JVGGDWABD, 6F BLUFF'EON, INDIANA.

SILO-DOOR.

Specification of Letters Patent.

Patented Apr. MP, 1917.

Application filed January 15, 1916. Serial No. 72,233.

To all whom it may concern:

Be it known that l, ALVA W. WooDwARn, a citizen of the United States ofAmerica, and. resident, of Blulfton, in the county of Wells and State ofIndiana, have invented certain new and useful Improvements inSilo-Doors, of which the following is a specification.

This invention relates to improvements in silo doors of that classwherein a number of doors of similar construction are arranged invertical series to close the opening in the silo, and the object of theinvention is to construct the door with means in connection therewithfor securely holding the door in closed position, and which will also beuseful as a step. A further object is to construct the fastening meansso as to render it economical in manufacture and of great stability andcapable of being adjusted so as to hold the door more firmly inposition.

The objects of the invention are accomplished by the constructionillustrated in the accompanying drawings, in which Figure 1 is anelevation showing a portion of a silo with the invention shown in place;

Fig. 2 is a transverse view of Fig. 1, the silo being shown in sectionon the line w-w; and

Fig. 3 is a plan view.

Similar characters of reference indicate corresponding parts throughoutthe several views and referring now to the same:

1 is the silo and (2) is the opening in the side thereof that is closedby the series of doors (3), the vertical edges of which restrespectively in grooves (4;) that are made in the corresponding edges ofthe walls forming the silo. A series of cross-braces (5) are arranged soas each will extend across the opening (2) with its ends securely fixedin the walls. Also a seriesof studs (6) proj ect horizontally from eachof the faces (7) of the wall into the opening (2) and extend in the samevertical plane as the cross-braces (5). The studs are arranged inopposite pairs and extend in horizontal planes that intervene midwaybetween the braces respectively.

Each door (8) has secured upon its front a pair of cleats (8) thatextend from the bottom to the top of the door. Each door has pivotallysecured thereto upon its front a U-shaped iron (9) the back portion ofwhich passes through the respective cleats which are recessed to receivethe iron. The outwardly extending ends (10) of the iron arescrew-threaded and connect with an angleiron (11) the respective ends ofwhich are adapted to engage with the corresponding studs (6) thatproject from the opposite faces (7) of the wall, and nuts (12) areprovided for each of said ends for clamping the angle-iron in adjustedpositions thereupon. By this construction the door may be held in itsposition more or less snugly as may be desired by adjusting theangleiron upon the swinging arms or extending ends of the U-shaped iron.

When the doors are in secured position the respective angle-irons serveas alternate steps with the cross-braces (5). Each door may be readilyremoved by lifting its angleiron from connection with the studs whichwill permit of the door being moved inwardly.

What I claim is 1. In combination with a silo proper having an openingtherein and oppositely disposed studs at the sides of the opening, adoor, a U-shaped iron pivotally secured to the door with its backadjacent thereto, and an angle-iron adjustably secured to the swingingends of the U-shaped iron, its ends being adapted to engage the studsrespectively and secure the door in position.

2. In combination with a silo having an opening therein and series ofdoors for closing the opening, a series of studs extending from thewalls of the silo and arranged in oppositely disposed pairs, and ahinged member for each door adapted to engage the corresponding pair ofstuds and hold the door in position and form a step extending across theopening.

3. In combination with a silo having an opening therein, a series ofdoors for closing the opening, a series of studs arranged in oppositepairs and extending into the opening from the adjacent Walls of thesilo, In testimony whereof I affix my signature, a hinged U-shaped ironon each door, and in presence of two witnesses.

means in connection with each iron adapted V ALVA W. WOODVVARD. toengage the corresponding pair of studs Witnesses:

5 and secure the door and form a step extend- MATILDA METTLER,

ing across the opening. SOPHIA HEINE.

Copies of this patent inay be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. G.

